Home / 13,429.04-20,143.58-4,657.78

Finding the Fourth Proportional to 13,429.04, 20,143.58 and 4,657.78

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Solution

The fourth proportional to 13,429.04, 20,143.58 and 4,657.78 is: 6,986.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.04 : 20,143.58 = 4,657.78 : x
  2. Step 2: Convert to fraction form
    13,429.04/20,143.58 = 4,657.78/x
  3. Step 3: Cross multiply
    13,429.04x = 20,143.58 × 4,657.78
  4. Step 4: Simplify right side
    13,429.04x = 93,824,365.94
  5. Step 5: Solve for x
    x = 93,824,365.94/13,429.04
  6. Step 6: Final answer
    x = 6,986.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.